Coefficient of Friction Testing

[JVN]

Originally Posted by JamesTerm

John, (or anyone else who has followed the math of this approach)

I found this link
http://tcdprd.autodesk.com/tcdprd/ev...html/15/48.htm

Can this same ramp technique -using testing material (e.g. carpet) on ramp- work to determine the static CoF for wheel traction by simply locking down the gears (i.e. make them never move during this test)? Or is there an easier way. I know wheels are rated, but it would be nice to actually measure it.

p.s. I presume robot must have a low CoG for this test so it will not tip over.

James,
Thanks for the link, but that is nothing new to me -- since I wrote it.
It is part of the pre-2012 version of the Autodesk VEX Robotics Curriculum. (New version just went up here, coincidentally).

Where did you find it linked?

Yes, locking the wheels, putting your robot on a ramp of carpet, and tilting the ramp is the test being described in this thread. That was the math I showed in my initial post.

-John